MB15F78SP Datasheet, PDF (4/27 Pages) Fujitsu Component Limited. – Dual Serial Input PLL Frequency Synthesizer

MB15F78SP
s BLOCK DIAGRAM
VCCTX GNDTX
(4) 6
5 (3)
VpTX
8 (6)
PSTX 7
(5)
Intermittent
mode control
(TX-PLL)
finTX 3
( 1)
XfinTX 4
( 2)
Prescaler
(TX-PLL)
(16/17, 32/33)
OSCIN 1
(19)
OR
(15 )
finRX 17
XfinRX 16
(14 )
Prescaler
(RX-PLL)
(32/33, 64/65)
PSRX 13
(11)
Intermittent
mode control
(RX-PLL)
3 bit latch
LDS SWTX FCTX
7 bit latch
11 bit latch
Binary 7-bit Binary 11-bit pro- ^fpTX
swallowcounter grammable
TX-PLL) counter(TX-PLL)
Phase
comp.
(TX-PLL)
Charge _Current
pump _Switch
(TX-PLL).
9 DoTX
( 7)
2 bit latch
T1 T2
14 bit latch
Binary 14-bit pro-
grammable ref.
counter(TX-PLL)
1 bit latch
C/P setting
counter
frTX
Lock Det.
(TX-PLL)
LDTX
T1 T2
2 bit latch
frRX
Binary 14-bit pro-
grammable ref.
counter(RX-PLL)
14 bit latch
C/P setting
counter
1 bit latch
AND
Lock Det.
(RX-PLL)
Selector
LD
frTX
frRX
fpTX
fpRX
10 LD/
( 8 ) fout
LDS SWRX FCRX
3 bit latch
Binary 7-bit
swallow counter
(RX-PLL)
7 bit latch
Binary 11-bit
programmable
counter(RX-PLL)
fpRX
11 bit latch
Phase
comp.
(RX-PLL)
Charge
pump
(RX-PLL)
Current
Switch
11 DoRX
( 9)
LE 18
(16 )
(17 )
Data 19
Clock 20
(18 )
Schmitt
circuit
Schmitt
circuit
Schmitt
circuit
Latch selector
CC
NN
12
23-bit shift register
O : TSSOP
( ) : BCC
4
2 (20 )
GND
( 12 ) 14 15 (13 )
VCCRX GNDRX
12 ( 10 )
VpRX